is the g424 engine fitted in this truck, BearsFan4Life?
When you say "the oil pump drive shaft seal", where are you expecting to find that seal? are you going to drop the pan to get to the oil pump drive shaft? The g424 has a oil pump drive off the timing belt, not off the valve's overhead cam.
Or are you talking about the hydraulic pump's drive shaft?
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.